I have two CLDC application say project1 and project2. I have created jar/jad/cod for each project separately. I imporeted project2 jar file in
project1 (right click on project->Properties->Build tab->import jar files). While running the application i got "JVM Error 104 Uncaught: RuntimeException". Can any suggest why it is giving this error?

You could either run it on the simulator with the IDE Debugger attached and set to break on all exceptions, or on the device look at the log file (in the main screen hold the ALT key while pressing LGLG), either way should give you an indication where the exception is being thrown.